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Role of Salicylic Acid as Foliar Spray on Hydride Rice (brri Hybrid Dhan3) Cultivation in Bangladesh

Mohammad Issak
Department of Soil Science, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

Most. Moslama Khatun
Department of Soil Science, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

Amena Sultana
Senior Scientific Officer, Agronomy Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted to study the effect of salicylic acid (SA) as foliar spray on yield and yield contributing characters of BRRI Hybrid dhan3. The experiment was laid out in a randomized complete block design (RCBD) with three replications and six treatment combinations as, T₁: 0 µM SA, T₂: 200 µM SA, T₃: 400 µM SA, T₄: 600 µM SA, T₅: 800 µM SA and T₆: 1000 µM SA. The results revealed that biomass production, dry matter production and yield and yield contributing characters were significantly increased due to the foliar application of SA. At the maximum tillering (MT) stage, the highest biomass production (15.0 t/ha) and dry matter production was observed in T₃ treatment. Treatments T₄, T₅ and T₆ showed significant variation on the effective tillers/hill. The maximum effective tillers/hill were found in the treatment T₆. The percentages of spikelet sterility were decreased with increasing the level of SA and the percentage of filled grains/panicle were increased with increasing level of SA. The insect infestation was reduced with increasing level of SA to up to 1000 µM. The maximum grain yield (9.21 t/ha) and straw yield (9.22 t/ha) was found in the treatment T₆ which was identical to T₅. On the other hand, in all cases the lowest results were found in the control treatment. The result showed that grain yield of rice increased with increasing level of SA to up to 1000 µM (T₆ treatment). Our results suggest that foliar spray of SA might be applied to increase the yield of hybrid rice in Bangladesh.

Keywords: Salicylic acid, Foliar spray, Hydride rice, Cultivation

Location: Sher-e-Bangla Agricultural University (SAU) Farm, Dhaka, Bangladesh

Start Date: 00-00-2014

End Date: 00-00-2015

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To examine the performance of hybrid rice with foliar application of SA.

Methodology:

The experiment was carried out in a typical rice growing soil of Sher-e-Bangla Agricultural University (SAU) Farm, Dhaka, during robi season of 2014-2015. The experimental area was under the Agro Ecological Zone, Madhupur Tract (AEZ-28) and the general soil type was Red Brown Terrace Soil under the Tejgaon soil series. The soil characteristics were silty clay loam with pH 6.3. The experimental area is under the subtropical climate. Bangladesh Rice Research Institute (BRRI) is developed some hybrid rice variety among them BRRI Hybrid dhan3 was used as the planting material. The experiment was laid out in a Randomized Complete Block Design (factorial) with six treatments and three replications. The treatments were as follows: T₁: 0 µM SA; T₂: 200 µM SA; T₃: 400 µM SA; T₄: 600 µM SA; T₅: 800 µM SA; T₆:1000 µM SA. The size of a unit plot was 3 m × 3 m. Total plots in the experimental field were 18. Thirty seven days old seedlings were uprooted carefully from the seedbed and transplanted in the experimental plots. Two healthy seedlings were transplanted in each hill. Intercultural operations were done for ensuring and maintaining the normal growth of the crop. After transplanting 5-6 cm water was maintained in each plot through irrigation during the growth period. The crop was infested with some common weeds, which were controlled by uprooting and removed them three times from the field during the period of experiment. There were some incidence in insects specially rice stem borer, grasshopper, rice bug etc. which were controlled by spraying Diaginon 50EC. Three foliar sprays of SA were done in the rice field. First spray was applied at 30 DAT (days after transplanting) at the early tillering stage, 2nd at 60 DAT at the early panicle initiation (PI) stage and the 3rd at 90 DAT at the flowering stage. The crop sampling was done at the time of harvest. At each harvest, 1m² of each plot was selected randomly for grain and straw yield calculation. Finally harvest them carefully and converted the yield into t/ha. At harvest randomly ten hills were collected from each plot for recording the yield contributing parameters. The plant heights, panicle length, number of grain/panicle, 1000 grain weight and yield were recorded separately. Ten hills from each plot were collected at maximum tillering (MT) stage and then weighted by using a digital electric balance. The data collected on different parameters were statistically analyzed to obtain the level of significance using the windows based software Statistix10 trial.

Source of Information: Res. Agric. Livest. Fish. Vol. 4, No. 3, December 2017: 157-164.

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The research was conducted to improve our understanding of hybrid rice responses to foliar spray of SA. Our results indicated that foliar applications of SA have beneficial effects on hybrid rice cultivation. Application of SA did not influence the plant height, panicle length and total number of grain/panicle, however did influence biomass and dry matter production, effective tillers/hills, 1000 grain weight, filled grain/panicle, unfilled grain/panicle, number of insect infested panicle/plot, grain yield and straw yield. Our results can be due to the SA-induced increment of membrane integrity that might be increased the amount of photosynthates and transported to the grains, thereby increased the number of filled grains per panicle, hence increased spikelet fertility. In conclusion, yield, the final manifestation of all the physiological processes, increased as a result of SA application under non-stress conditions. In hybrid rice cultivation SA as foliar spray might be useful as a yield modifying tool.

Knowledge Management: Journal